The length to weight ratio (LWR) was used to estimate populations of four fish species sampled on the Amazon coast of the state of Maranhão, Brazil. The fishes were sampled in 2018 and 2019 by artisanal coastal fishing, using gillnets (0.20–0.60 mm). The parameters a and b of the equation W_T = a L_T^b were estimated. The obtained LWRs were W_T = 0.06LT^2.93, (r²) = .989 for Oligoplites saliens; W_T = 0.061L_T^2.57, (r²) = .982 for Peprilus crenulatus; W_T = 0.014L_T^2.80, (r²) = .985 for Bagre bagre; and W_T = 0.035L_T^3.21, (r²) = .981 for Nebris microps.

中文翻译：

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巴西东北地区河口地区四种鱼类的长重比

身高体重比（LWR）用于估计在巴西马拉尼昂州亚马逊海岸采样的四种鱼类的种群。在2018年和2019年，使用刺网（0.20–0.60毫米）通过手工沿海捕鱼对这些鱼进行了采样。估计方程W _T  ＝ a L _T ^b的参数a和b。获得的LWRs是 寡聚体寡核苷酸的W _T＝ 0.06LT ^2.93，（r ²）＝。989 。W¯¯ _Ť  = 0.061L _Ť ^2.57，（- [R ²）= 0.982用于Peprilus crenulatus ; w ^ _Ť对于Bagre bagre  = 0.014L _T ^2.80，（r ²）= .985 ; 和W _Ť  = 0.035L _Ť ^3.21，（- [R ²）= 0.981用于Nebris microps。